/**
 * Check if SecurityManager has the clipboard locked out.
 * @returns true if it is this program can use the clipboard
 * without getting a SecurtiyException.
 */
private boolean isSafetToUseClipboard()
   {
   boolean safe = true;
   SecurityManager sm = System.getSecurityManager();
   if ( sm != null )
      {
      try
         {
         sm.checkSystemClipboardAccess();
         }
      catch ( SecurityException e )
         {
         safe = false;
         }
      }
   return safe;
   }